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1 dnl aclocal.m4 -- extra macros for configuring Octave |
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2 dnl |
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3 dnl Copyright (C) 1996 John W. Eaton |
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4 dnl |
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5 dnl This file is part of Octave. |
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6 dnl |
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7 dnl Octave is free software; you can redistribute it and/or modify it |
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8 dnl under the terms of the GNU General Public License as published by the |
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9 dnl Free Software Foundation; either version 2, or (at your option) any |
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10 dnl later version. |
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11 dnl |
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12 dnl Octave is distributed in the hope that it will be useful, but WITHOUT |
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13 dnl ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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14 dnl FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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15 dnl for more details. |
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16 dnl |
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17 dnl You should have received a copy of the GNU General Public License |
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18 dnl along with Octave; see the file COPYING. If not, write to the Free |
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19 dnl Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
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20 |
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21 dnl See what libraries are used by the C++ compiler. Need this for |
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22 dnl dynamic linking. |
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23 dnl |
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24 dnl Write a minimal program and compile it with -v. I don't know what |
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25 dnl to do if your compiler doesn't have -v... |
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26 dnl |
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27 dnl OCTAVE_CXXLIBS() |
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28 AC_DEFUN(OCTAVE_CXXLIBS, |
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29 [AC_REQUIRE([AC_PROG_CXXCPP]) |
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30 AC_REQUIRE([AC_PROG_CXX]) |
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31 AC_MSG_CHECKING([for C++ libraries]) |
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32 AC_CACHE_VAL(octave_cv_cxxlibs, |
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33 [AC_LANG_SAVE |
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34 AC_LANG_CPLUSPLUS |
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35 XCXXFLAGS="$CXXFLAGS" |
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36 CXXFLAGS="$XCXXFLAGS -v" |
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37 export CXXFLAGS |
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38 dnl |
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39 dnl This may be too tricky and break with future autoconf releases, |
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40 dnl but it works with version 2.3, even with the Ultrix /bin/sh. |
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41 dnl |
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42 dnl I don't think that stripping commas out of this will ever hurt. |
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43 dnl |
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44 coutput=`( AC_TRY_LINK([], [], []) ) AC_FD_CC>&1 | sed 's/,/ /g'` |
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45 CXXFLAGS="$XCXXFLAGS" |
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46 AC_LANG_RESTORE |
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47 changequote(, )dnl |
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48 dnl |
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49 octave_cv_cxxlibs= |
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50 lflags= |
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51 want_arg= |
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52 dnl |
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53 for arg in $coutput; do |
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54 if test x$want_arg = x; then |
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55 want_arg= |
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56 case $arg in |
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57 /*.a) |
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58 exists=false |
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59 for f in $lflags; do |
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60 if test x$arg = x$f; then |
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61 exists=true |
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62 fi |
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63 done |
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64 if $exists; then |
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65 arg= |
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66 else |
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67 lflags="$lflags $arg" |
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68 fi |
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69 ;; |
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70 -[LR]*) |
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71 exists=false |
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72 for f in $lflags; do |
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73 if test x$arg = x$f; then |
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74 exists=true |
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75 fi |
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76 done |
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77 ;; |
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78 -l*) |
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79 if test x$arg = x-lang-c++; then |
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80 arg= |
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81 else |
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82 lflags="$lflags $arg" |
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83 fi |
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84 ;; |
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85 -u) |
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86 want_arg=$arg |
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87 ;; |
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88 *) |
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89 arg= |
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90 ;; |
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91 esac |
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92 else |
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93 want_arg= |
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94 fi |
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95 if test x$arg != x; then |
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96 octave_cv_cxxlibs="$octave_cv_cxxlibs $arg" |
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97 fi |
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98 done |
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99 dnl |
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100 changequote([, ])]) |
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101 AC_MSG_RESULT([$octave_cv_cxxlibs]) |
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102 CXXLIBS="$octave_cv_cxxlibs" |
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103 AC_SUBST(CXXLIBS)]) |
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104 |
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105 dnl See what libraries are used by the Fortran compiler. |
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106 dnl |
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107 dnl Write a minimal program and compile it with -v. I don't know what |
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108 dnl to do if your compiler doesn't have -v... |
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109 dnl |
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110 dnl OCTAVE_FLIBS() |
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111 AC_DEFUN(OCTAVE_FLIBS, |
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112 [AC_MSG_CHECKING([for Fortran libraries]) |
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113 AC_CACHE_VAL(octave_cv_flibs, |
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114 [changequote(, )dnl |
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115 echo " END" > conftest.f |
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116 foutput=`${F77-f77} -v -o conftest conftest.f 2>&1` |
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117 dnl |
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118 dnl The easiest thing to do for xlf output is to replace all the commas |
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119 dnl with spaces. Try to only do that if the output is really from xlf, |
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120 dnl since doing that causes problems on other systems. |
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121 dnl |
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122 xlf_p=`echo $foutput | grep xlfentry` |
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123 if test -n "$xlf_p"; then |
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124 foutput=`echo $foutput | sed 's/,/ /g'` |
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125 fi |
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126 dnl |
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127 ld_run_path=`echo $foutput | \ |
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128 sed -n -e 's/.*\(LD_RUN_PATH *= *[^ ]*\).*/\1/p' | \ |
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129 sed -e 's/LD_RUN_PATH *= *//'` |
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130 dnl |
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131 dnl We are only supposed to find this on Solaris systems, and this |
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132 dnl substitution is probably only going to work with gcc on those |
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133 dnl systems... |
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134 dnl |
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135 if test -n "$ld_run_path"; then |
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136 ld_run_path="-Xlinker -R -Xlinker $ld_run_path" |
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137 fi |
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138 dnl |
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139 flibs= |
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140 lflags= |
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141 dnl |
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142 dnl If want_arg is set, we know we want the arg to be added to the list, |
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143 dnl so we don't have to examine it. |
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144 dnl |
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145 want_arg= |
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146 dnl |
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147 for arg in $foutput; do |
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148 old_want_arg=$want_arg |
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149 want_arg= |
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150 case "$old_want_arg" in |
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151 '') |
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152 case $arg in |
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153 /*.a | /*values-X*.o) |
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154 exists=false |
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155 for f in $lflags; do |
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156 if test x$arg = x$f; then |
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157 exists=true |
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158 fi |
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159 done |
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160 if $exists; then |
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161 arg= |
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162 else |
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163 lflags="$lflags $arg" |
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164 fi |
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165 ;; |
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166 -bI:*) |
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167 exists=false |
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168 for f in $lflags; do |
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169 if test x$arg = x$f; then |
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170 exists=true |
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171 fi |
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172 done |
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173 if $exists; then |
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174 arg= |
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175 else |
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176 lflags="$lflags -Xlinker $arg" |
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177 fi |
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178 ;; |
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179 -lang*) |
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180 arg= |
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181 ;; |
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182 -[lLR]) |
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183 want_arg=$arg |
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184 arg= |
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185 ;; |
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186 -[lLR]*) |
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187 exists=false |
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188 for f in $lflags; do |
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189 if test x$arg = x$f; then |
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190 exists=true |
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191 fi |
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192 done |
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193 if $exists || test x$arg = x-lm -o x$arg = x-lc; then |
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194 arg= |
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195 else |
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196 lflags="$lflags $arg" |
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197 fi |
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198 ;; |
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199 -u) |
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200 want_arg=$arg |
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201 ;; |
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202 -Y) |
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203 want_arg=$arg |
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204 arg= |
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205 ;; |
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206 *) |
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207 arg= |
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208 ;; |
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209 esac |
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210 ;; |
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211 -[lLR]) |
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212 arg="$old_want_arg $arg" |
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213 ;; |
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214 -Y) |
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215 dnl |
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216 dnl Should probably try to ensure unique directory options here too. |
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217 dnl This probably only applies to Solaris systems, and then will only |
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218 dnl work with gcc... |
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219 dnl |
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220 arg=`echo $arg | sed -e 's%^P,%%'` |
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221 SAVE_IFS=$IFS |
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222 IFS=: |
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223 list= |
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224 for elt in $arg; do |
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225 list="$list -L $elt" |
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226 done |
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227 IFS=$SAVE_IFS |
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228 arg="$list" |
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229 ;; |
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230 esac |
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231 dnl |
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232 if test -n "$arg"; then |
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233 flibs="$flibs $arg" |
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234 fi |
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235 done |
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236 if test -n "$ld_run_path"; then |
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237 flibs_result="$ld_run_path $flibs" |
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238 else |
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239 flibs_result="$flibs" |
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240 fi |
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241 changequote([, ])dnl |
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242 octave_cv_flibs="$flibs_result"]) |
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243 FLIBS="$octave_cv_flibs" |
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244 AC_MSG_RESULT([$FLIBS])]) |
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245 |
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246 dnl See if the Fortran compiler uses uppercase external names. |
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247 dnl |
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248 dnl OCTAVE_F77_UPPERCASE_NAMES() |
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249 AC_DEFUN(OCTAVE_F77_UPPERCASE_NAMES, |
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250 [AC_MSG_CHECKING([whether $F77 uses uppercase external names]) |
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251 AC_CACHE_VAL(octave_cv_f77_uppercase_names, |
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252 [octave_cv_f77_uppercase_names=no |
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253 cat > conftest.f <<EOF |
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254 subroutine xxyyzz () |
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255 return |
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256 end |
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257 EOF |
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258 if ${F77-f77} -c conftest.f 1>&AC_FD_CC 2>&AC_FD_CC; then |
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259 if test "`${NM-nm} conftest.o | grep XXYYZZ`" != ""; then |
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260 octave_cv_f77_uppercase_names=yes |
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261 fi |
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262 fi]) |
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263 AC_MSG_RESULT([$octave_cv_f77_uppercase_names]) |
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264 if test "$octave_cv_f77_uppercase_names" = yes; then |
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265 AC_DEFINE(F77_UPPERCASE_NAMES, 1) |
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266 fi]) |
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267 |
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268 dnl See if the Fortran compiler appends underscores to external names. |
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269 dnl |
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270 dnl OCTAVE_F77_APPEND_UNDERSCORE() |
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271 AC_DEFUN(OCTAVE_F77_APPEND_UNDERSCORE, |
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272 [AC_MSG_CHECKING([whether $F77 appends underscores to external names]) |
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273 AC_REQUIRE([OCTAVE_F77_UPPERCASE_NAMES]) |
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274 AC_CACHE_VAL(octave_cv_f77_append_underscore, |
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275 [octave_cv_f77_append_underscore=no |
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276 cat > conftest.f <<EOF |
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277 subroutine xxyyzz () |
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278 return |
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279 end |
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280 EOF |
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281 if ${F77-f77} -c conftest.f 1>&AC_FD_CC 2>&AC_FD_CC; then |
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282 if test "$octave_cv_f77_uppercase_names" = yes; then |
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283 if test "`${NM-nm} conftest.o | grep XXYYZZ_`" != ""; then |
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284 octave_cv_f77_append_underscore=yes |
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285 fi |
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286 else |
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287 if test "`${NM-nm} conftest.o | grep xxyyzz_`" != ""; then |
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288 octave_cv_f77_append_underscore=yes |
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289 fi |
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290 fi |
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291 fi]) |
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292 AC_MSG_RESULT([$octave_cv_f77_append_underscore]) |
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293 if test "$octave_cv_f77_append_underscore" = yes; then |
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294 AC_DEFINE(F77_APPEND_UNDERSCORE, 1) |
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295 fi]) |
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296 |
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297 dnl See if the Fortran compiler is compatible with f2c. |
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298 dnl |
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299 dnl Write a minimal program, compile it, and see if it works as |
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300 dnl expected. |
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301 dnl |
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302 dnl OCTAVE_F2C_F77_COMPAT() |
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303 AC_DEFUN(OCTAVE_F2C_F77_COMPAT, |
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304 [AC_REQUIRE([OCTAVE_FLIBS]) |
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305 AC_REQUIRE([OCTAVE_F77_APPEND_UNDERSCORE]) |
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306 AC_MSG_CHECKING([$F77/f2c compatibility]) |
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307 AC_CACHE_VAL(octave_cv_f2c_f77_compat, |
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308 [trap 'rm -f ftest* ctest* core; exit 1' 1 3 15 |
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309 octave_cv_f2c_f77_compat=no |
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310 cat > ftest.f <<EOF |
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311 INTEGER FUNCTION FORSUB (C, D) |
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312 CHARACTER *(*) C |
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313 INTEGER L |
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314 DOUBLE PRECISION D |
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315 L = LEN (C) |
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316 WRITE (*, '(A,1X,I2)') C(1:L), INT (D) |
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317 FORSUB = 1 |
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318 RETURN |
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319 END |
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320 EOF |
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321 ${F77-f77} -c ftest.f 1>&AC_FD_CC 2>&AC_FD_CC |
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322 dnl |
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323 changequote(, ) |
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324 cat > ctest.c <<EOF |
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325 #include "confdefs.h" |
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326 static char s[14]; |
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327 int main () |
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328 { |
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329 double d = 10.0; |
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330 int len; |
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331 strcpy (s, "FOO-I-HITHERE"); |
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332 len = strlen (s); |
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333 #ifdef F77_APPEND_UNDERSCORE |
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334 return (! forsub_ (s, &d, len)); |
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335 #else |
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336 return (! forsub (s, &d, len)); |
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337 #endif |
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338 } |
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339 #if defined (sun) |
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340 int MAIN_ () { return 0; } |
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341 #elif defined (linux) && defined (__ELF__) |
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342 int MAIN__ () { return 0; } |
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343 #endif |
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344 EOF |
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345 changequote([, ]) |
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346 dnl |
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347 if ${CC-cc} -c ctest.c 1>&AC_FD_CC 2>&AC_FD_CC; then |
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348 if ${CC-cc} -o ctest ctest.o ftest.o $FLIBS -lm 1>&AC_FD_CC 2>&AC_FD_CC; then |
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349 ctest_output=`./ctest 2>&1` |
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350 status=$? |
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351 if test $status -eq 0 && test "$ctest_output" = "FOO-I-HITHERE 10"; then |
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352 octave_cv_f2c_f77_compat=yes |
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353 fi |
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354 fi |
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355 fi]) |
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356 rm -f ftest* ctest* core |
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357 AC_MSG_RESULT([$octave_cv_f2c_f77_compat])]) |
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358 |
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359 dnl The following test is from Karl Berry's Kpathseach library. I'm |
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360 dnl including it here in case we someday want to make the use of |
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361 dnl kpathsea optional. |
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362 dnl |
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363 dnl Some BSD putenv's, e.g., FreeBSD, do malloc/free's on the environment. |
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364 dnl This test program is due to Mike Hibler <mike@cs.utah.edu>. |
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365 dnl We don't actually need to run this if we don't have putenv, but it |
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366 dnl doesn't hurt. |
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367 AC_DEFUN(OCTAVE_SMART_PUTENV, |
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368 [AC_MSG_CHECKING(whether putenv uses malloc) |
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369 AC_CACHE_VAL(octave_cv_func_putenv_malloc, |
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370 [AC_TRY_RUN([ |
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371 #define VAR "YOW_VAR" |
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372 #define STRING1 "GabbaGabbaHey" |
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373 #define STRING2 "Yow!!" /* should be shorter than STRING1 */ |
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374 extern char *getenv (); /* in case char* and int don't mix gracefully */ |
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375 main () |
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376 { |
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377 char *str1, *rstr1, *str2, *rstr2; |
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378 str1 = getenv (VAR); |
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379 if (str1) |
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380 exit (1); |
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381 str1 = malloc (strlen (VAR) + 1 + strlen (STRING1) + 1); |
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382 if (str1 == 0) |
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383 exit (2); |
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384 strcpy (str1, VAR); |
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385 strcat (str1, "="); |
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386 strcat (str1, STRING1); |
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387 if (putenv (str1) < 0) |
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388 exit (3); |
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389 rstr1 = getenv (VAR); |
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390 if (rstr1 == 0) |
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391 exit (4); |
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392 rstr1 -= strlen (VAR) + 1; |
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393 if (strncmp (rstr1, VAR, strlen (VAR))) |
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394 exit (5); |
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395 str2 = malloc (strlen (VAR) + 1 + strlen (STRING2) + 1); |
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396 if (str2 == 0 || str1 == str2) |
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397 exit (6); |
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398 strcpy (str2, VAR); |
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399 strcat (str2, "="); |
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400 strcat (str2, STRING2); |
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401 if (putenv (str2) < 0) |
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402 exit (7); |
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403 rstr2 = getenv (VAR); |
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404 if (rstr2 == 0) |
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405 exit (8); |
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406 rstr2 -= strlen (VAR) + 1; |
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407 #if 0 |
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408 printf ("rstr1=0x%x, rstr2=0x%x\n", rstr1, rstr2); |
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409 /* |
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410 * If string from first call was reused for the second call, |
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411 * you had better not do a free on the first string! |
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412 */ |
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413 if (rstr1 == rstr2) |
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414 printf ("#define SMART_PUTENV\n"); |
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415 else |
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416 printf ("#undef SMART_PUTENV\n"); |
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417 #endif |
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418 exit (rstr1 == rstr2 ? 0 : 1); |
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419 }], octave_cv_func_putenv_malloc=yes, octave_cv_func_putenv_malloc=no, |
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420 octave_cv_func_putenv_malloc=no)])dnl |
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421 AC_MSG_RESULT($octave_cv_func_putenv_malloc) |
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422 if test $octave_cv_func_putenv_malloc = yes; then |
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423 AC_DEFINE(SMART_PUTENV) |
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424 fi]) |
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425 dnl |
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426 dnl This is a GNU libc invention, and this check is also from Karl |
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427 dnl Berry's kpathsea library. |
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428 dnl |
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429 AC_DEFUN(OCTAVE_PROGRAM_INVOCATION_NAME, |
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430 [AC_MSG_CHECKING(whether program_invocation_name is predefined) |
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431 AC_CACHE_VAL(octave_cv_var_program_inv_name, |
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432 [AC_TRY_LINK(, [main() { program_invocation_name = "love"; }], |
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433 octave_cv_var_program_inv_name=yes, octave_cv_var_program_inv_name=no)])dnl |
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434 AC_MSG_RESULT($octave_cv_var_program_inv_name) |
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435 if test $octave_cv_var_program_inv_name = yes; then |
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436 AC_DEFINE(HAVE_PROGRAM_INVOCATION_NAME) |
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437 fi]) |
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2469
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438 dnl |
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439 dnl These two checks for signal functions were originally part of the |
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440 dnl aclocal.m4 file distributed with bash 2.0. |
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441 dnl |
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442 dnl Check type of signal routines (posix, 4.2bsd, 4.1bsd or v7) |
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443 AC_DEFUN(OCTAVE_SIGNAL_CHECK, |
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444 [AC_REQUIRE([AC_TYPE_SIGNAL]) |
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445 AC_MSG_CHECKING(for type of signal functions) |
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446 AC_CACHE_VAL(octave_cv_signal_vintage, |
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447 [ |
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448 AC_TRY_LINK([#include <signal.h>],[ |
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449 sigset_t ss; |
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450 struct sigaction sa; |
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451 sigemptyset(&ss); sigsuspend(&ss); |
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452 sigaction(SIGINT, &sa, (struct sigaction *) 0); |
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453 sigprocmask(SIG_BLOCK, &ss, (sigset_t *) 0); |
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454 ], octave_cv_signal_vintage=posix, |
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455 [ |
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456 AC_TRY_LINK([#include <signal.h>], [ |
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457 int mask = sigmask(SIGINT); |
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458 sigsetmask(mask); sigblock(mask); sigpause(mask); |
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459 ], octave_cv_signal_vintage=4.2bsd, |
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460 [ |
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461 AC_TRY_LINK([ |
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462 #include <signal.h> |
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463 RETSIGTYPE foo() { }], [ |
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464 int mask = sigmask(SIGINT); |
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465 sigset(SIGINT, foo); sigrelse(SIGINT); |
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466 sighold(SIGINT); sigpause(SIGINT); |
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2491
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467 ], octave_cv_signal_vintage=svr3, octave_cv_signal_vintage=v7 |
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2469
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468 )] |
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469 )] |
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470 ) |
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471 ]) |
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472 AC_MSG_RESULT($octave_cv_signal_vintage) |
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2491
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473 if test "$octave_cv_signal_vintage" = posix; then |
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2469
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474 AC_DEFINE(HAVE_POSIX_SIGNALS) |
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2491
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475 elif test "$octave_cv_signal_vintage" = "4.2bsd"; then |
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2469
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476 AC_DEFINE(HAVE_BSD_SIGNALS) |
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2491
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477 elif test "$octave_cv_signal_vintage" = svr3; then |
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2469
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478 AC_DEFINE(HAVE_USG_SIGHOLD) |
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479 fi |
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480 ]) |
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481 dnl |
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482 AC_DEFUN(OCTAVE_REINSTALL_SIGHANDLERS, |
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483 [AC_REQUIRE([AC_TYPE_SIGNAL]) |
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484 AC_REQUIRE([OCTAVE_SIGNAL_CHECK]) |
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485 AC_MSG_CHECKING([if signal handlers must be reinstalled when invoked]) |
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486 AC_CACHE_VAL(octave_cv_must_reinstall_sighandlers, |
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487 [AC_TRY_RUN([ |
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488 #include <signal.h> |
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489 #ifdef HAVE_UNISTD_H |
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490 #include <unistd.h> |
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491 #endif |
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492 typedef RETSIGTYPE sigfunc(); |
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493 int nsigint; |
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494 #ifdef HAVE_POSIX_SIGNALS |
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495 sigfunc * |
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496 set_signal_handler(sig, handler) |
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497 int sig; |
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498 sigfunc *handler; |
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499 { |
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500 struct sigaction act, oact; |
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501 act.sa_handler = handler; |
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502 act.sa_flags = 0; |
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503 sigemptyset (&act.sa_mask); |
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504 sigemptyset (&oact.sa_mask); |
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505 sigaction (sig, &act, &oact); |
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506 return (oact.sa_handler); |
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507 } |
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508 #else |
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509 #define set_signal_handler(s, h) signal(s, h) |
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510 #endif |
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511 RETSIGTYPE |
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512 sigint(s) |
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513 int s; |
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514 { |
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515 nsigint++; |
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516 } |
|
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517 main() |
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518 { |
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519 nsigint = 0; |
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520 set_signal_handler(SIGINT, sigint); |
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521 kill((int)getpid(), SIGINT); |
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522 kill((int)getpid(), SIGINT); |
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523 exit(nsigint != 2); |
|
|
524 } |
|
|
525 ], octave_cv_must_reinstall_sighandlers=no, octave_cv_must_reinstall_sighandlers=yes, |
|
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526 AC_MSG_ERROR(cannot check signal handling if cross compiling))]) |
|
|
527 AC_MSG_RESULT($octave_cv_must_reinstall_sighandlers) |
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2491
|
528 if test "$octave_cv_must_reinstall_sighandlers" = yes; then |
|
2469
|
529 AC_DEFINE(MUST_REINSTALL_SIGHANDLERS) |
|
|
530 fi |
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|
531 ]) |
